diff --git a/core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php b/core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php
index b39ff27..e3c599e 100644
--- a/core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php
+++ b/core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php
@@ -37,6 +37,7 @@
    * Overrides Entity::__construct().
    */
   public function __construct(array $values, $entity_type) {
+    $this->langcode = language_default()->langcode;
     parent::__construct($values, $entity_type);
 
     // Backup the original ID, if any.
diff --git a/core/lib/Drupal/Core/Entity/Entity.php b/core/lib/Drupal/Core/Entity/Entity.php
index 1d3817a..785c81c 100644
--- a/core/lib/Drupal/Core/Entity/Entity.php
+++ b/core/lib/Drupal/Core/Entity/Entity.php
@@ -27,7 +27,7 @@ class Entity implements IteratorAggregate, EntityInterface {
    *
    * @var string
    */
-  public $langcode;
+  public $langcode = LANGUAGE_NOT_SPECIFIED;
 
   /**
    * The entity type.
@@ -68,7 +68,6 @@ class Entity implements IteratorAggregate, EntityInterface {
    */
   public function __construct(array $values, $entity_type) {
     $this->entityType = $entity_type;
-    $this->langcode = language_default()->langcode;
     // Set initial values.
     foreach ($values as $key => $value) {
       $this->$key = $value;